summaryrefslogtreecommitdiffstats
path: root/src/truetype/ttsubpix.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/truetype/ttsubpix.c')
-rw-r--r--src/truetype/ttsubpix.c261
1 files changed, 0 insertions, 261 deletions
diff --git a/src/truetype/ttsubpix.c b/src/truetype/ttsubpix.c
deleted file mode 100644
index 2dc6c2f..0000000
--- a/src/truetype/ttsubpix.c
+++ /dev/null
@@ -1,261 +0,0 @@
-/***************************************************************************/
-/* */
-/* ttsubpix.c */
-/* */
-/* TrueType Subpixel Hinting. */
-/* */
-/* Copyright 2010-2011 by */
-/* David Turner, Robert Wilhelm, and Werner Lemberg. */
-/* */
-/* This file is part of the FreeType project, and may only be used, */
-/* modified, and distributed under the terms of the FreeType project */
-/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
-/* this file you indicate that you have read the license and */
-/* understand and accept it fully. */
-/* */
-/***************************************************************************/
-
-#include <ft2build.h>
-#include FT_INTERNAL_DEBUG_H
-#include FT_INTERNAL_CALC_H
-#include FT_INTERNAL_STREAM_H
-#include FT_INTERNAL_SFNT_H
-#include FT_TRUETYPE_TAGS_H
-#include FT_OUTLINE_H
-
-#include "ttsubpix.h"
-
-
-#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
-
- FT_LOCAL_DEF( FT_Bool )
- is_member_of_family_class( const FT_String* detected_font_name,
- const FT_String* rule_font_name )
- {
- FT_UInt i, j;
-
- /* If font name matches rule family */
- if ( strcmp( detected_font_name, rule_font_name ) == 0 ) return TRUE;
-
- /* If font name is a wildcard "" */
- if ( strcmp( rule_font_name, "" ) == 0 ) return TRUE;
-
- /* If font name is contained in a class list */
- for ( i = 0; i < FAMILY_CLASS_RULES_SIZE; i++ )
- {
- if ( strcmp( FAMILY_CLASS_Rules[i].name, rule_font_name ) == 0 )
- {
- for ( j = 0; j < MAX_CLASS_MEMBERS; j++ )
- {
- if ( strcmp( FAMILY_CLASS_Rules[i].member[j], "" ) == 0 )
- continue;
- if ( strcmp( FAMILY_CLASS_Rules[i].member[j], detected_font_name ) == 0 )
- return TRUE;
- }
- }
- }
- return FALSE;
- }
-
-
- FT_LOCAL_DEF( FT_Bool )
- is_member_of_style_class( const FT_String* detected_font_style,
- const FT_String* rule_font_style )
- {
- FT_UInt i, j;
-
- /* If font style matches rule style */
- if ( strcmp( detected_font_style, rule_font_style ) == 0 ) return TRUE;
-
- /* If font style is a wildcard "" */
- if ( strcmp( rule_font_style, "" ) == 0 ) return TRUE;
-
- /* If font style is contained in a class list */
- for ( i = 0; i < STYLE_CLASS_RULES_SIZE; i++ )
- {
- if ( strcmp( STYLE_CLASS_Rules[i].name, rule_font_style ) == 0 )
- {
- for ( j = 0; j < MAX_CLASS_MEMBERS; j++ )
- {
- if ( strcmp( STYLE_CLASS_Rules[i].member[j], "" ) == 0 )
- continue;
- if ( strcmp( STYLE_CLASS_Rules[i].member[j], detected_font_style ) == 0 )
- return TRUE;
- }
- }
- }
- return FALSE;
- }
-
-
- FT_LOCAL_DEF( FT_Bool )
- sph_test_tweak( TT_Face face,
- FT_String* family,
- int ppem,
- FT_String* style,
- FT_UInt glyph_index,
- SPH_TweakRule* rule,
- FT_UInt num_rules )
- {
- FT_UInt i;
-
-
- /* rule checks may be able to be optimized further */
- for ( i = 0; i < num_rules; i++ )
- {
- if ( family &&
- ( is_member_of_family_class ( family, rule[i].family ) ) )
- if ( rule[i].ppem == 0 ||
- rule[i].ppem == ppem )
- if ( style &&
- is_member_of_style_class ( style, rule[i].style ) )
- if ( rule[i].glyph == 0 ||
- FT_Get_Char_Index( (FT_Face)face,
- rule[i].glyph ) == glyph_index )
- return TRUE;
- }
- return FALSE;
- }
-
-
- FT_LOCAL_DEF( float )
- scale_test_tweak( TT_Face face,
- FT_String* family,
- int ppem,
- FT_String* style,
- FT_UInt glyph_index,
- SPH_ScaleRule* rule,
- FT_UInt num_rules )
- {
- FT_UInt i;
-
-
- /* rule checks may be able to be optimized further */
- for ( i = 0; i < num_rules; i++ )
- {
- if ( family &&
- ( is_member_of_family_class ( family, rule[i].family ) ) )
- if ( rule[i].ppem == 0 ||
- rule[i].ppem == ppem )
- if ( style &&
- is_member_of_style_class( style, rule[i].style ) )
- if ( rule[i].glyph == 0 ||
- FT_Get_Char_Index( (FT_Face)face,
- rule[i].glyph ) == glyph_index )
- return rule[i].scale;
- }
- return 1.0;
- }
-
-#define TWEAK_RULES( x ) \
- if ( sph_test_tweak( face, family, ppem, style, glyph_index, \
- x##_Rules, x##_RULES_SIZE ) ) \
- loader->exec->sph_tweak_flags |= SPH_TWEAK_##x;
-
-#define TWEAK_RULES_EXCEPTIONS( x ) \
- if ( sph_test_tweak( face, family, ppem, style, glyph_index, \
- x##_Rules_Exceptions, x##_RULES_EXCEPTIONS_SIZE ) ) \
- loader->exec->sph_tweak_flags &= ~SPH_TWEAK_##x;
-
- FT_LOCAL_DEF( void )
- sph_set_tweaks( TT_Loader loader,
- FT_UInt glyph_index )
- {
- TT_Face face = (TT_Face)loader->face;
- FT_String* family = face->root.family_name;
- int ppem = loader->size->metrics.x_ppem;
- FT_String* style = face->root.style_name;
-
- /* Don't apply rules if style isn't set */
- if ( !face->root.style_name ) return;
-
-#ifdef SPH_DEBUG_MORE_VERBOSE
- printf( "%s,%d,%s,%c=%d ", family, ppem, style, glyph_index, glyph_index );
-#endif
-
- TWEAK_RULES( PIXEL_HINTING );
-
- if ( loader->exec->sph_tweak_flags & SPH_TWEAK_PIXEL_HINTING )
- {
- loader->exec->ignore_x_mode = FALSE;
- return;
- }
-
- TWEAK_RULES( ALLOW_X_DMOVE );
- TWEAK_RULES( ALLOW_X_DMOVEX );
- TWEAK_RULES( ALLOW_X_MOVE_ZP2 );
- TWEAK_RULES( ALWAYS_DO_DELTAP );
- TWEAK_RULES( ALWAYS_SKIP_DELTAP );
- TWEAK_RULES( DEEMBOLDEN );
- TWEAK_RULES( DELTAP_SKIP_EXAGGERATED_VALUES );
- TWEAK_RULES( DO_SHPIX );
- TWEAK_RULES( EMBOLDEN );
- TWEAK_RULES( MIAP_HACK );
- TWEAK_RULES( NORMAL_ROUND );
- TWEAK_RULES( NO_ALIGNRP_AFTER_IUP );
- TWEAK_RULES( NO_CALL_AFTER_IUP );
- TWEAK_RULES( NO_DELTAP_AFTER_IUP );
- TWEAK_RULES( RASTERIZER_35 );
- TWEAK_RULES( SKIP_INLINE_DELTAS );
- TWEAK_RULES( SKIP_IUP );
- TWEAK_RULES( MIRP_CVT_ZERO );
-
- TWEAK_RULES( SKIP_OFFPIXEL_Y_MOVES );
- TWEAK_RULES_EXCEPTIONS( SKIP_OFFPIXEL_Y_MOVES );
-
- TWEAK_RULES( SKIP_NONPIXEL_Y_MOVES );
- TWEAK_RULES_EXCEPTIONS( SKIP_NONPIXEL_Y_MOVES );
-
- TWEAK_RULES( ROUND_NONPIXEL_Y_MOVES );
- TWEAK_RULES_EXCEPTIONS( ROUND_NONPIXEL_Y_MOVES );
-
- if ( loader->exec->sph_tweak_flags & SPH_TWEAK_RASTERIZER_35 )
- {
- if ( loader->exec->rasterizer_version != 35 )
- {
- loader->exec->rasterizer_version = 35;
- /* must re-execute fpgm */
- loader->exec->size->cvt_ready = FALSE;
- tt_size_ready_bytecode( loader->exec->size,
- FT_BOOL( loader->load_flags & FT_LOAD_PEDANTIC ) );
- }
- }
- else
- {
- if ( loader->exec->rasterizer_version == 35 )
- {
- loader->exec->rasterizer_version = 37;
- /* must re-execute fpgm */
- loader->exec->size->cvt_ready = FALSE;
- tt_size_ready_bytecode( loader->exec->size,
- FT_BOOL( loader->load_flags & FT_LOAD_PEDANTIC ) );
- }
- }
-
- if ( IS_HINTED( loader->load_flags ) )
- {
- TWEAK_RULES( TIMES_NEW_ROMAN_HACK );
- TWEAK_RULES( COURIER_NEW_2_HACK );
- }
-
- if ( sph_test_tweak( face, family, ppem, style, glyph_index,
- COMPATIBILITY_MODE_Rules, COMPATIBILITY_MODE_RULES_SIZE ) )
- {
- loader->exec->compatibility_mode |= TRUE;
- loader->exec->ignore_x_mode |= TRUE;
- }
- else
- loader->exec->compatibility_mode &= FALSE;
-
- if ( IS_HINTED( loader->load_flags ) )
- {
- if ( sph_test_tweak( face, family, ppem, style, glyph_index,
- COMPATIBLE_WIDTHS_Rules, COMPATIBLE_WIDTHS_RULES_SIZE ) )
- loader->exec->compatible_widths |= TRUE;
- }
- }
-
-#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
-
-
-/* END */
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-22 00:16:25 +0000